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Chalcopyrite & Calcite On Dolomite Psm Calcite

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RHT753028

Chalcopyrite & Calcite On Dolomite Psm Calcite

ex collection H. Cracau 1972
Classic Locality

Description Tabs

Description
Locality: 
Anna Mine, Alsdorf, Cologne, North Rhine - Westphalia, Germany
Class: 
Combination
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.5 × 4 × 3 cm
Weight: 
64.00gr
Description

On a base of dolomite replacing a big calcize crystal grew very nice transparent calcite and between those some glossy golden chalcopyrite crystals. A floater.

Even better in nature.

Mineral Data
What's on the rock

Chalcopyrite

Formula: 
CuFeS2
Strunz: 
2.CB.10a
Crystal System: 
Tetragonal
Hardness: 
3.5 - 4.0

Calcite

Polymorph of: 
Formula: 
CaCO3
Strunz: 
5.AB.05
Crystal System: 
Trigonal
Hardness: 
3.0
Streak: 
White

Dolomite

Formula: 
CaMg(CO3)2
Strunz: 
5.AB.10
Crystal System: 
Trigonal - Rhombohedral
Hardness: 
3.5 - 4.0
Streak: 
White
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